121341113011 has 4 divisors (see below), whose sum is σ = 127727487400. Its totient is φ = 114954738624.

The previous prime is 121341112987. The next prime is 121341113021. The reversal of 121341113011 is 110311143121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121341113011 - 2¹⁹ = 121340588723 is a prime.

It is a super-2 number, since 2×121341113011² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 6386374369 = 121341113011 / (1 + 2 + 1 + 3 + 4 + 1 + 1 + 1 + 3 + 0 + 1 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121341113011.

It is not an unprimeable number, because it can be changed into a prime (121341113021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3193187166 + ... + 3193187203.

It is an arithmetic number, because the mean of its divisors is an integer number (31931871850).

Almost surely, 2^121341113011 is an apocalyptic number.

121341113011 is a deficient number, since it is larger than the sum of its proper divisors (6386374389).

121341113011 is an equidigital number, since it uses as much as digits as its factorization.

121341113011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6386374388.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121341113011 its reverse (110311143121), we get a palindrome (231652256132).

The spelling of 121341113011 in words is "one hundred twenty-one billion, three hundred forty-one million, one hundred thirteen thousand, eleven".